Boiler.



PATENTED DEC. 4, 1906.

G. KINGSLEY.

BOILER. v APPLICATION runnnna. 2. 1906.

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THE NORRIS PETERS cri, wnsnmmcuv, a c.

UNITED STATES PATENT OFFICE.

BOILER.

Specification of Letters Patent.-

Patented. Dec. 4, 1906.

Application filed February 2, 1206. Serial Nb. 299,162.

To all whom it may concern:

Be itknown that I, GEORGE KINGSLEY, a citizen of the United States and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Sectional Boiler, of which the following is a full, clear, and exact description.

My invention relates to a sectional watertube boiler.

The object of the invention is primarily to increase the heating-surfaces of the boiler without correspondingly increasing the complication of the parts, thus enabling a highly eflicient boiler to be produced at a comparatively low cost. In attaining this end 1 provide two water-walls arranged, respectively, at the sides of the furnace and each having short inwardly-projecting water-tubes and having a certain peculiar arrangement with respect to the Walls and grate, so that the gases of combustion are caused to circulate between the walls and around the tubes, thus producing a boiler having a great heatingsurface, and consequently great steam-making qualities, and at the same time one in which the dangers of explosion will be re duced to a minimum.

Reference is had to the accompanying drawings, Which illustrate as an example the preferred embodiment of my invention, in 'which Figure 1 is a longitudinal section of the boiler. Fig. 2 is a cross-section, and Fig. 3 is a sectional plan view.

10 indicates the water-walls of the boiler, which are formed of inner and outer sheets s aced apart and held by stay-bolts 11, as siiown. Preferably the outer surfaces of said walls are provided with a non-conducting covering 12, and the top of the boiler is formed by a wall 14, which extends between the outer edges of the walls 10 and is also provided with a non-conducting covering 15. The front wall 16 of the boiler extends between the side water-walls 10 and is provided with an ash-door 17, a fire-door 18, and above the fire-door with a door 19, through which access may be had to the interior of the boiler. A rear wall 20 is provided with doors 21 similar to the door 19 and for the same purpose.

In the lower front part of the boiler, be tween the side walls 10 thereof, is arranged the furnace-grate 22, the rear of which has the usual bridge-wall 23, and over this grate constructed.

is a baffle-wall 24, which extends horizontally from the front wall rearward to a point near the rear wall, thus causing the gases of combustion to pass rearward below the baffle wall, thence forward, and out through the stack 25, which passes from the upper front part of the boiler.

26 indicates the water-tubes. These tubes are arranged in two gangs or sets related, respectively, to the water Walls 10. Said tubes are fastened to and communicate with the interiors of the water-walls and extend horizontally toward each other, the inner ends of one set being juxtaposed to the inner ends of the other set, and all of said ends being closed, as shown in section in Fig. 2. The tubes completely fill the path of the gases of combustion and insure thorough heating of the water and economical generation of steam.

27 indicates a large steam pipe or drum which extends longitudinally through the upper part of the boiler just below the top wall 14. Said drum communicates with the water-wallslO by means of transverse connecting-pipes 28, which may be of any convenient or desired number. The drum or pipe 27 is also provided with one or more safety-valves 29, which extend through the top of the boiler, and with a steam-outlet pipe 30, through which dry superheated steam is taken to the point of consumption.

My improved boiler, it will be observed, occupies comparatively little space and is of such simple form that it may be very cheaply It also aflords the largest possible heating-surface, and consequently insures economical steam generation. The danger of explosion is reduced to a minimum, since there is no large chamber filled with a great volume of steam under pressure, it be ing intended to maintain the water-level at the level of the uppermost tubes 26, so that only the upper portion of the water-walls, the pipes 28, and drum 27 are filled with steam.

Having thus described the preferred form of my invention, what I actually claim, and

- desire to secure by Letters Patent, is

1. A boiler having two side water-walls, a non-conducting covering connecting the upper edges thereof, two groups of water-tubes, said groups respectively communicating with the water-walls and extending inward to the middle portion of the boiler, the inner ends of said tubes being closed, a fireplace in the IIO lower front portion of the boiler, a bafflewall located above the fireplace and extending from the front wall of the boiler rearward adjacent to the rear wall, a steam-drum extending longitudinally in the upper part of the boiler above the baffle-wall, transverse connecting-pipes communicating with the water-walls and steam-drum, and a stack passing from the upper front portion of the boiler above the baffle-wall.

2. A boiler having side water-walls, a nonconducting covering extending between the upper edges thereof, two groups of watertubes respectively communicating with the water-walls and extending inward to the middle part of the furnace, the inner ends of the said tubes being closed, a steam-drum extending longitudinally through the upper part of the boiler, transverse connectingtubes communicating with the said drum and with the water-walls, a fireplace, and a stack for carrying off the products of combustion.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE KINGSLEY.

Witnesses:

JNo. M. BITTER, ISAAC B. OWENS. 

